<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>

    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
        <div class="cmt-title">
          第{{i+1}}楼&nbsp;&nbsp;用户：{{item.user_name}}&nbsp;&nbsp;发表时间：{{item.add_time | dateFormat}}
        </div>
        <div class="cmt-body">
          {{item.content}}
        </div>
      </div>

    </div>
    <mt-button type="danger" size="large">加载更多</mt-button>
  </div>
</template>

<script>
import { Toast } from "mint-ui";
var comments = [
  {
              user_name: "匿名用户",
              add_time: 1550194262831,
              content: "youa re the best1"},
               {
              user_name: "匿名用户",
              add_time: 1550194662831,
              content: "youa re the best2"},
               {
              user_name: "匿名用户",
              add_time: 1550194962831,
              content: "youa re the best3"}
]

export default {
  data() {
    return {
      comments,
      msg: ""
    };
  },

  methods: {
   postComment(){
        if (this.msg.trim().length === 0) {
        return Toast("评论内容不能为空！");
      }
        var ctm = {
              user_name: "匿名用户",
              add_time: Date.now(),
              content: this.msg.trim()
        };
            this.comments.unshift(ctm);
            this.msg = "";
   }
 
  }
  // props: ["id"]
}

</script>

<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
